mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-11 12:28:41 +08:00
0a5f9b382c
Rework cpufeature implementation to allow for various cpu feature indications, which is not only limited to hwcap bits. This is achieved by adding a sequential list of cpu feature numbers, where each of them is mapped to an entry which indicates what this number is about. Each entry contains a type member, which indicates what feature name space to look into (e.g. hwcap, or cpu facility). If wanted this allows also to automatically load modules only in e.g. z/VM configurations. Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Steffen Eiden <seiden@linux.ibm.com> Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com> Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com> Link: https://lore.kernel.org/r/20220713125644.16121-2-seiden@linux.ibm.com Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
147 lines
3.5 KiB
C
147 lines
3.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Cryptographic API.
|
|
*
|
|
* s390 implementation of the SHA256 and SHA224 Secure Hash Algorithm.
|
|
*
|
|
* s390 Version:
|
|
* Copyright IBM Corp. 2019
|
|
* Author(s): Joerg Schmidbauer (jschmidb@de.ibm.com)
|
|
*/
|
|
#include <crypto/internal/hash.h>
|
|
#include <linux/init.h>
|
|
#include <linux/module.h>
|
|
#include <linux/cpufeature.h>
|
|
#include <crypto/sha3.h>
|
|
#include <asm/cpacf.h>
|
|
|
|
#include "sha.h"
|
|
|
|
static int sha3_256_init(struct shash_desc *desc)
|
|
{
|
|
struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
|
|
|
|
memset(sctx->state, 0, sizeof(sctx->state));
|
|
sctx->count = 0;
|
|
sctx->func = CPACF_KIMD_SHA3_256;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sha3_256_export(struct shash_desc *desc, void *out)
|
|
{
|
|
struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
|
|
struct sha3_state *octx = out;
|
|
|
|
octx->rsiz = sctx->count;
|
|
memcpy(octx->st, sctx->state, sizeof(octx->st));
|
|
memcpy(octx->buf, sctx->buf, sizeof(octx->buf));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sha3_256_import(struct shash_desc *desc, const void *in)
|
|
{
|
|
struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
|
|
const struct sha3_state *ictx = in;
|
|
|
|
sctx->count = ictx->rsiz;
|
|
memcpy(sctx->state, ictx->st, sizeof(ictx->st));
|
|
memcpy(sctx->buf, ictx->buf, sizeof(ictx->buf));
|
|
sctx->func = CPACF_KIMD_SHA3_256;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sha3_224_import(struct shash_desc *desc, const void *in)
|
|
{
|
|
struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
|
|
const struct sha3_state *ictx = in;
|
|
|
|
sctx->count = ictx->rsiz;
|
|
memcpy(sctx->state, ictx->st, sizeof(ictx->st));
|
|
memcpy(sctx->buf, ictx->buf, sizeof(ictx->buf));
|
|
sctx->func = CPACF_KIMD_SHA3_224;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct shash_alg sha3_256_alg = {
|
|
.digestsize = SHA3_256_DIGEST_SIZE, /* = 32 */
|
|
.init = sha3_256_init,
|
|
.update = s390_sha_update,
|
|
.final = s390_sha_final,
|
|
.export = sha3_256_export,
|
|
.import = sha3_256_import,
|
|
.descsize = sizeof(struct s390_sha_ctx),
|
|
.statesize = sizeof(struct sha3_state),
|
|
.base = {
|
|
.cra_name = "sha3-256",
|
|
.cra_driver_name = "sha3-256-s390",
|
|
.cra_priority = 300,
|
|
.cra_blocksize = SHA3_256_BLOCK_SIZE,
|
|
.cra_module = THIS_MODULE,
|
|
}
|
|
};
|
|
|
|
static int sha3_224_init(struct shash_desc *desc)
|
|
{
|
|
struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
|
|
|
|
memset(sctx->state, 0, sizeof(sctx->state));
|
|
sctx->count = 0;
|
|
sctx->func = CPACF_KIMD_SHA3_224;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct shash_alg sha3_224_alg = {
|
|
.digestsize = SHA3_224_DIGEST_SIZE,
|
|
.init = sha3_224_init,
|
|
.update = s390_sha_update,
|
|
.final = s390_sha_final,
|
|
.export = sha3_256_export, /* same as for 256 */
|
|
.import = sha3_224_import, /* function code different! */
|
|
.descsize = sizeof(struct s390_sha_ctx),
|
|
.statesize = sizeof(struct sha3_state),
|
|
.base = {
|
|
.cra_name = "sha3-224",
|
|
.cra_driver_name = "sha3-224-s390",
|
|
.cra_priority = 300,
|
|
.cra_blocksize = SHA3_224_BLOCK_SIZE,
|
|
.cra_module = THIS_MODULE,
|
|
}
|
|
};
|
|
|
|
static int __init sha3_256_s390_init(void)
|
|
{
|
|
int ret;
|
|
|
|
if (!cpacf_query_func(CPACF_KIMD, CPACF_KIMD_SHA3_256))
|
|
return -ENODEV;
|
|
|
|
ret = crypto_register_shash(&sha3_256_alg);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
ret = crypto_register_shash(&sha3_224_alg);
|
|
if (ret < 0)
|
|
crypto_unregister_shash(&sha3_256_alg);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static void __exit sha3_256_s390_fini(void)
|
|
{
|
|
crypto_unregister_shash(&sha3_224_alg);
|
|
crypto_unregister_shash(&sha3_256_alg);
|
|
}
|
|
|
|
module_cpu_feature_match(S390_CPU_FEATURE_MSA, sha3_256_s390_init);
|
|
module_exit(sha3_256_s390_fini);
|
|
|
|
MODULE_ALIAS_CRYPTO("sha3-256");
|
|
MODULE_ALIAS_CRYPTO("sha3-224");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DESCRIPTION("SHA3-256 and SHA3-224 Secure Hash Algorithm");
|